<?xml version="1.0" encoding="utf-8"?><rdf:RDF  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"  xmlns:skos="http://www.w3.org/2004/02/skos/core#"  xmlns:map="http://www.w3c.rl.ac.uk/2003/11/21-skos-mapping#"  xmlns:dct="http://purl.org/dc/terms/"  xmlns:dc="http://purl.org/dc/elements/1.1/"><skos:ConceptScheme rdf:about="https://digilab.ptb.de/dkd/refType/vocab/">  <dc:title>Metrology Database</dc:title>  <dc:creator>German Calibration Service (DKD)</dc:creator>  <dc:contributor>Thomas Krah, Daniel Hutzschenreuter, Benjamin Gloger, Muhammed-Ali Demir, Moritz Jordan</dc:contributor>  <dc:publisher>Deutscher Kalibrierdienst (German Calibration Service)</dc:publisher>  <dc:rights></dc:rights>  <dc:subject>metrology, reference types, digital calibration certificate, certificate of conformity</dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:date>2023-06-19</dc:date>  <dct:modified>2026-04-10 06:58:36</dct:modified>  <dc:language>en-US</dc:language>  </skos:ConceptScheme>  <skos:Concept rdf:about="https://digilab.ptb.de/dkd/refType/vocab/skos/452"><skos:prefLabel xml:lang="en-US">RippleFactor</skos:prefLabel> <skos:definition xml:lang="en">High direct current ripple factor
Ratio of the ripple current amplitude to the arithmetic mean value of the current. The amplitude of the ripple is
defined as half the difference between the maximum and minimum values. </skos:definition> <skos:definition xml:lang="de">Stromwelligkeitsfaktor
Verhältnis zwischen der Stromwelligkeitsamplitude und dem arithmetischen Mittelwert des Stromes. Die Amplitude der Welligkeit ist definiert als Hälfte der Differenz zwischen dem Maximal- und Minimalwert. </skos:definition> <skos:scopeNote xml:lang="en">Unit: µA/A </skos:scopeNote> <skos:scopeNote xml:lang="en">DSI Unit: \micro\ampere\ampere\tothe{-1} </skos:scopeNote> <skos:scopeNote xml:lang="en">SI Unit: 1 </skos:scopeNote> <skos:historyNote xml:lang="en">2026-04-07 Created </skos:historyNote> <skos:note xml:lang="en"> </skos:note> <skos:example xml:lang="en"> </skos:example><skos:inScheme rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/"/><skos:broader rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/skos/449"/>  <dct:created>2026-04-07 15:39:21</dct:created>  </skos:Concept></rdf:RDF>